Abstract: In this article, the advantages and disadvantages of 3S technology on green land planning and analysis were summarized, and the reference for further application was offered. The monitoring and analysis on Tokyo green land, as well as the practical application of GPS on BAILIN park planning demonstrated that there existed errors, high costings in the 3S technology application. However, it has conspicuous benefits on the analysis scope, simulation, compatibility, and integration, contributing to the greenland monitoring, analysis and. automation of planned assignments.